A passkey is a cryptographic authentication method that lets you sign into accounts using your fingerprint, face recognition, or device PIN instead of a traditional password. Your device stores the passkey securely, and when you try to log in, it confirms your identity locally before sending an approval signal to the website or app. The server never sees your biometric data itself.
Passkeys offer several advantages over passwords:
- You cannot be phished. Since there is no password to steal, attackers cannot trick you into revealing one.
- No password reuse risk. Each passkey is unique to a specific service, so a breach elsewhere cannot compromise your account.
- No forgotten credentials. Your device remembers the passkey for you.
- Faster login. Biometric authentication is quicker than typing a password.
Common concerns include device loss and cross-device sign-in. If you lose your phone, you risk losing passkeys stored only on that device, though most providers sync backups to cloud accounts. Signing into a new device requires you to authenticate on your existing device first, which adds a security step but can feel inconvenient.
Passkeys are supported by Apple, Google, and Microsoft, and many websites including Amazon, GitHub, and PayPal now offer them. However, full adoption remains incomplete, so most services still require a password as a fallback option. As a user, you should enable passkeys on important accounts as they become available, starting with email and banking services where security matters most.